In conclusion, we have developed a low-cost and easy to build do-it-yourself style gas chromatography system that is suitable for an undergraduate analytical lab. The GC system is fabricated with readily available materials than can be found in a typical undergraduate laboratory. A Python code is provided to record data and display results in real-time. The GC system with different configurations are demonstrated with in-house natural gas, product gases from a CO 2 reduction reaction, and a noble gas.
This GC system can be easily incorporated into an undergraduate laboratory and serve as an effective tool to teach analytical chemistry. Supporting Information. Author Information.
Yuguang C. The authors declare no competing financial interest. Patel, Parth H. Given student familiarity with electronic cigarettes e-cigs , this lab uses a student-built smoke collection app. Students in a second semester, introductory org. In the real-world, the amt. This expt. Students compared the retention time of nicotine with an injection std. This injection std. Each lab group analyzed different e-cig liqs. Students improved upon their ability to interpret mass spectrometry data by predicting fragmentation patterns for both nicotine and quinoline.
This lab expt. The students who performed this expt. Extra virgin olive oil EVOO is a refined, highly valued, and relatively expensive food ingredient, typical of the Mediterranean area. Detection of EVOO that has been adulterated or counterfeited with the addn.
SPE and gas chromatog. In the lab. This method could be applied in the courses of instrumental anal. It could be readily adapted to other analytes such as the presence of steroids or other pharmaceuticals. Li, Yuguang C. This paper presents a teaching kit that combines the fabrication of a low-cost microcontroller-based potentiostat and a LabVIEW-generated graphical user interface. The potentiostat enables undergraduate-level students to learn electroanal.
The purpose of this teaching module is to make the introduction of electrochem. The electronic circuit components for the potentiostat are readily available and easy to assemble. The graphical user interface replaces any programming-based interface, displays data in real time, and interacts with user commands.
The software package is a stand-alone executable file that is compatible with any PC and is provided in the Supporting Information. Cyclic voltammetry, linear sweep voltammetry, and chronoamperometry functions are demonstrated with representative electrochem. This teaching module is user-friendly so that it can be easily adapted into the undergraduate classroom. We make available in the Supporting Information all of the necessary instructions and information, including schematics for the potentiostat, circuit layout, electronic components, case fabrication, step-by-step instructions for assembly, software user interface, and detailed operating instructions.
A versatile potentiostat based on inexpensive and "off the shelf" components is reported. The platform was shown to be capable of performing simple electrochem.
The simple design and construction enable easy customization to accommodate a broad array of exptl. The equipment was used to calc. Although simple in design, the low cost and good performance of the device make it a competitive alternative for teaching labs. In an effort to make absorption spectrophotometry available to high school chem. The spectrophotometer was constructed using LEGO blocks, a light emitting diode, optical elements including a lens , a slide-mounted diffraction grating, and a photodiode detector.
The photodiode detector was mounted on a rotatable arm for wavelength selection based on elementary laws of diffraction. This simple design demonstrates basic phys.
The homemade spectrophotometer's performance, as measured by comparison to a com. An introductory electronics lab. In this unit, students use basic electronic components to build a functioning photometer. Students interface the photometer to a microcontroller and write an Arduino program to collect the signal, calc.
Students use their home-built instruments to measure the concn. They also used their instrument to measure the concn. In everyday praxis, we often need demonstration measuring devices thermometers, pH meters, etc. Here, we present some of the capabilities of the Arduino platform for the school environment. This microprocessor board can be used for inexpensive construction of measuring devices for demonstrations and expts. American Chemical Society.
The electrochem. However, the selectivity for ethanol, a globally significant commodity chem. IIoT ready: Designed for the future Many industrial analyzer platforms were designed over a decade ago, but our innovative, new online analyzer platform was developed with the future in mind. Tubes and fittings Compression fittings. To order this product Contact us.
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IIoT ready: Designed for the future Many industrial analyzer platforms were designed over a decade ago, but our innovative, new online analyzer platform was developed with the future in mind. Tubes and fittings Compression fittings. To order this product Contact us. Other products that might interest you. GCSense Versatile and easy to configure, this platform is a high-quality inch rackmount Up to 4 isothermal ovens Up to 2 detectors ASDSense software with large touchscreen display Learn more.
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